An Unbiased View of merk seng gelombang terbaik
As revealed during the determine, tightening the bolt leads to a wedge currently being driven up in opposition to a sleeve, which expands it and triggers it to compress towards the fabric it is actually staying mounted to.Selain itu, angkur baja juga bertugas untuk mendistribusikan beban secara merata guna mengurangi tekanan pada titik-titik terten